Question

Explain Why 3 x 5 x 7 x 13 Plus 13 Is A Composite Number ? Answer Fast ! Urgent

Answer 1

Step-by-step explanation:

3*5*7*13 + 13

= 13( 3*5*7 + 1)

= 13 (105 +1 )

=13 (106)

since it has two factors other than 1 and itself, it is a composite no.

(or)

u can prime factorise 13 and 106

and then u can write since it has more than two prime factors it is a composite no.